A very large gust of wind blew the leading door back into the trailing door. At the very end of the video another gust of wind blows the left corner of the rug up.

im not sure about that. you need a whole lot of air pressure to make that happen. you need underpressure in the building it self.at the end of the video the door tries to move again its automated any way.

There is a small amount of space between the walls of the "chamber" and the doors, allowing them to pass through without grinding the walls. There is no way there was a pressure buildup, as it isn't airtight at any point.It looked more to me like the mechanism itself had a mechanical failure and sent one door backward while the rest were simply sped up. Then again, it could have been a strong gust of wind just hitting the door. My only problem with that, is that the door that swung backwards hitting the guy wasn't the one facing outside. It hadn't reached that point yet.Anyone googled to see if anything like this has happened before?

I agree too, and notice how the doors just slam on that poor man, and on the long mat on the floor it did move , like "link1625 said "something did move out of the glass into the building." that was weird, freeky, and totally scary.